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Radio Valve Data: 1915-1960

Keith R Thrower OBE, The Valve Museum, April, 2022.
    
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Help information: Abbreviations - Explanations - Notes.

Post-1925 amplifying valves, frequency changers
and signal diodes

Type
Description
Filament
Anode
Auxillary Grid
Grid
ra
gm/go
RL
Po
Rk
Base (1)Pin-out details for non-exhibits can be found with the base details.
Year
 
 
Volts
Amps
Volts
mA
Volts
mA
-V
kΩ
mA/V
kΩ
Watts
Ω
Type
Ref
 

 Radio Record

 Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
AC/DC4
Octode FC
4.0
0.65
mix250
 osc90
1.6
2.0
70
 
3.8
 
1.5
 
0.6⅄
 
B7+tc
2
AC/DD4A
Double diode
4.0
0.65
200
0.8
-
-
B5
3
AC/DDTR
Double diode triode
4.0
0.65
250
4.0
-
-
5.0
11.4
3.60
1000
B7+tc
7
AC/HFP
RF pentode
4.0
1.00
200
3.5
100
0.6
2.0
3.50
600
B5+tc
B7+tc
2
5
AC/HL
Medium-μ triode
4.0
1.00
200
3.0
-
-
4.0
13.3
3.00
B5
1
AC/HPB
RF pentode
4.0
0.65
250
2.9
250
0.8
2.0
4.00
500
B7+tc
5
AC/NHL
Triode
4.0
0.65
250
5.0
-
-
4.5
11.0
3.5
1000
B5
1
AC/OC4
Octode FC
4.0
0.65
mix250
osc90
70
 
1.5/25
 
0.7⅄
 
B7+tc
2
AC/P
Output triode
4.0*
1.00
250
20.0
-
-
18.0
2.5
4.00
5.0
1.0
B4
1
AC/PT
Output pentode
4.0
1.20
350
40.0
250
18.0
60.0
3.50
7.0
3.0
400
B5+st
B7
16
24
AC/PT4VB
Output pentode
4.0
2.00
250
40.0
250
6.0
10.0
7.0
3.6
150
B7
Z
AC/PTA
Output pentode
4.0
1.20
250
41.0
250
16.5
3.50
7.0
3.0
400
B5+st
B7
16
24
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
AC/PX4
Output triode (IH)
4.0
1.00
250
48.0
-
-
33.0
850Ω
6.00
2.4
2.8
700
B4
1
AC/S
RF tetrode
4.0
1.00
200
3.0
100
0.8
2.0
400.0
3.00
500
B5+tc
2
AC/TH4
Triode hexode FC
4.0
1.00
h300
t150
80
 
1.5/25
 
1.0⅄
 
B7+tc
3
AC/VHFP
VM RF pentode
4.0
1.00
200
5.0
100
1.3
2/35
3.50
B7+tc
5
AC/VHPB
VM RF pentode
4.0
0.65
250
10.0
250
2.5
1/50
4.00
B7+tc
6
AC/VS
VM RF tetrode
4.0
1.20
200
3.0
100
0.8
1.5/40
350.0
3.00
B5+tc
2
BB2A
Class B double triode
2.0*
0.25
150
2.5
-
-
3.0
10.0
2.0
B7
10
BB2B
Class B double triode
2.0*
0.25
135
-
-
0
10.0
1.7
B7
10
DDA/13
Double diode
13.0
0.20
200
0.8
-
-
B5
3
DDA/13L
Double diode
13.0
0.20
200
0.8
-
-
Ct5
1
DDTR2
Double diode triode
2.0*
0.10
135
1.0
-
-
3.0
21.4
1.40
B5+tc
5
DDTR/13
Double diode triode
13.0
0.20
200
4.0
-
-
5.0
11.0
3.60
1000
B7+tc
7
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
DDTR/13L
Double diode triode
13.0
0.20
200
4.0
-
-
5.0
11.0
3.60
1000
Ct8+tc
7
DL2
Detector triode
2.0*
0.10
150
3.0
-
-
4.5
14.0
1.30
B4
1
H2
General-purpose triode
2.0*
0.10
200
1.0
-
-
3.0
23.0
1.30
B4
1
HFP2
RF pentode
2.0*
0.12
150
1.9
150
0.7
1.5
1.90
B4+tc
2
HFP/13
RF pentode
13.0
0.20
200
3.0
100
1.5
2.0
2.40
450
B7+tc
6
HFP/13L
RF pentode
13.0
0.20
200
3.0
100
1.5
2.0
2.40
450
Ct8+tc
15
HPB/13
RF pentode
13.0
0.20
200
3.5
200
1.5
1.5
3.50
300
B7+tc
6
L2
AF triode
2.0*
0.12
150
3.2
-
-
5.0
15.0
1.20
B4
1
LP2
Output triode
2.0*
0.20
150
5.0
-
-
6.0
3.9
3.50
7.5
0.2
B4
1
NHL/13
Triode
13.0
0.20
200
6.0
-
-
4.0
12.0
3.50
1000
B7
23
NHL/13L
Triode
13.0
0.20
200
6.0
-
-
4.0
12.0
3.50
1000
Ct8+tc
3
OC2
Octode FC
2.0*
0.13
mix150
osc110
70
 
1/12
 
0.27⅄
 
B7+tc
 
1
 
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
OC/13
Octode FC
13.0
0.20
mix200
osc90
70
 
1.5/25
 
0.6⅄
 
B7+tc
 
2
 
OC/13L
Octode FC
13.0
0.20
mix200
osc90
70
 
1.5/25
 
0.6⅄
 
Ct8+tc
 
2
 
P2
Output triode
2.0*
0.15
150
10.0
-
-
12.0
3.3
1.50
7.0
0.26
B4
1
PT2
Output pentode
2.0*
0.22
150
8.0
150
6.0
33.0
1.50
14.0
0.60
B4+st
B5
26
6
PT2C
Output pentode
2.0*
0.26
150
28.0
150
12.0
2.00
6.0
1.0
B5
6
PT/24DA
Output pentode
24.0
0.20
200
45.0
100
19.0
8.00
5.0
3.0
B7
24
PT/24DAL
Output pentode
24.0
0.20
200
45.0
100
19.0
8.00
5.0
3.0
400
Ct8+tc
4
PT24M
Output pentode (a.c.)
4.0*
1.10
250
42.0
250
15.0
4.00
7.5
3.1
400
B5
6
PT/35DA
Output pentode
35.0
0.20
200
50.0
200
8.0
8.50
4.4
3.2
160
B7+tc
4
S2
RF tetrode
2.0*
0.12
200
1.5
100
0.3
3.0
300.0
1.20
B4+tc
2
1935
SP2
Output triode
2.0*
0.20
150
14.0
-
-
18.0
2.2
3.00
6.7
0.36
B4
A
TH/21DA
Triode hexode FC
21.0
0.20
h200
t150
80
 
1.5/25
 
0.1⅄
 
B7+tc
 
6
 
Click for pin-out: B4 - UX4 - B5 - Ct5 - UX5 - UX6 - B7 - B7G - UX7 - B8A - B8B - MO - IO - Ct8 - Footless - B9 - B9A - B9G - B10B - Others
VHFP
VM RF pentode
4.0
1.00
250
4.5
100
1.9
2.0
1M
2.30
B5+tc
B7+tc
2
5
VHFP/13
VM RF pentode
13.0
0.20
200
8.0
100
2.9
1/10
3.50
B7+tc
6
VHFP/13L
VM RF pentode
13.0
0.20
200
8.0
100
2.9
1/10
Ct8+tc
15
VHP2
VM RF pentode
2.0*
0.12
150
2.5
150
0.6
0.9/17
1.70
B7+tc
4
VHP/13
VM RF pentode
13.0
0.20
200
8.0
100
2.6
3/55
2.80
B7+tc
6
VHP/13L
VM RF pentode
13.0
0.20
200
8.0
100
2.6
3/55
2.80
Ct8
15
VHPB/13
VM RF pentode
13.0
0.20
200
10.0
200
3.5
1/50
3.50
B7+tc
6
VS2
VM RF tetrode
2.0*
0.12
150
1.0
75
0.1
0.5
1.50
B4+tc
2

 

Rectifiers

Type
Class
Cathode
Va
DC Ia
PIV
DC Vo
Base
Year
 
 
Type
Volts
Amps
Max RMS
mA
Volts
Volts
Type
Ref
Year

 Radio Record

 Note: for Loctal B8G read B8B, USS & USM = UX, Y8A = Footless
FW3
FW
DH
4.0
2.00
350
120
B4
5
FW4A
FW
IH
4.0
1.20
250
60
B4
14
FW5
FW
DH
4.0
2.00
500
120
B4
5
FW6
FW
DH
4.0
2.00
600
180
B4
5
FW350
FW
DH
4.0
1.00
300
80
B4
5
HW/20
HW
IH
20.0
0.20
250
80
B5
8
HW20L
HW
IH
20.0
0.20
250
80
Ct8
5
HW30
HW
IH
30.0
0.20
275
120
B5
8
IFW4A
FW
IH
4.0
2.00
400
120
B4
14
UFW/30
FW
IH
30.0
0.20
275
120
B7
29
UFW/30L
FW
IH
30.0
0.20
275
120
Ct8
6

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